Auto-sized version of dX
Derivative of Gaussian kernel along the x axis.
Derivative of Gaussian kernel along the x axis. Note that since we use (row, column) notation for kernels, the derivative is along the second index (column). Also note that we need to flip the sign of the row since it descends in the downward direction in matrix notation, but ascends in (x, y) notation.
Author: Greg Snider
Auto-sized version of dY
Derivative of Gaussian kernel along the y axis.
Derivative of Gaussian kernel along the y axis. Note that since we use (row, column) notation for kernels, the derivative is along the first index (row). Also note that we need to flip the sign of the row since it descends in the downward direction in matrix notation, but ascends in (x, y) notation.
Author: Greg Snider
Utilities for computing 1-D Gaussians.